Tim Dowling: It's hardly surprising I never learned this rather specific form of handball, played between two buttresses against the wall of Eton College Chapel, or on a court which recreates that space's eccentric dimensions, most of them in the grounds of other boarding schools.

Kira Cochrane: In an article entitled The Marriage Crunch, published in the US magazine Newsweek in 1986, it was reported that a single 40-year-old woman was "more likely to be killed by a terrorist" than to get married.

Peta Bee: Do stretch. Tightness in other muscles, including the hamstrings (back of the thighs) or hip flexors, can pull the back out of alignment and weaken its muscles. Perform the child's pose yoga stretch daily.